.content-box{
	width: 100%;position: relative;
}
.content{
	max-width: 1200px;
	margin: 0 auto;
}

html{
	font-family: '微软雅黑',Arial, Helvetica, sans-serif;
}
	.fixed {
		position: absolute;
		width: 100%;
		left: 0;
		top: 0;
		z-index: 10;
	}

	.content1 {
		background: rgba(48, 48, 48, .73);
	}

	.content2 {
		/* max-width: 1200px; */
		background: #fff;
		margin: 0 auto;
	}